That's fine if you're using the built-in kernel as a souped-up display driver. All you need is a way to make pixels happen, the rest can happen off-device.
Exactly I'm in a process of turning one Kindle into a openhab panel.
I failed a bit during the soldering part (the pads got unglued, so now I need to push hard a conductive cable, until I get wifi and ssh up and working).
This post will greatly help me because I mostly need that: wifi and ssh working (and then make the pixels happen :), but I saw a solution for that on mobileread forums).
